WO2016010239A1

WO2016010239A1 - Apparatus for treating radioactive material using multiple separation membranes

Info

Publication number: WO2016010239A1
Application number: PCT/KR2015/004213
Authority: WO
Inventors: 홍승관; 최병규; 이성복
Original assignee: 고려대학교 산학협력단
Priority date: 2014-07-14
Filing date: 2015-04-28
Publication date: 2016-01-21
Also published as: US20170206992A1; KR101816340B1; KR20160008434A

Abstract

An apparatus for treating radioactive material using multiple separation membranes, according to an embodiment of the present invention, preferably comprises: a storage tank in which wastewater containing radioactive material is stored; a forward osmosis processing unit that receives the wastewater while being connected to the storage tank, separates the radioactive material, which is contained in the wastewater, by a forward osmosis process using a draw solution, provides the radioactive material separated from the wastewater to the storage tank, and provides the draw solution to a reverse osmosis processing unit; and the reverse osmosis processing unit that receives the draw solution while being connected to the forward osmosis processing unit, separates the radioactive material, which is not removed from the draw solution in the forward osmosis processing unit, through a reverse osmosis process, and provides, to the forward osmosis processing unit, the draw solution from which the radioactive material is removed among the draw solution used in the reverse osmosis process.

Description

Radioactive material processing device by multi separator

The present invention relates to a radioactive material processing apparatus by a multi separator, and more particularly, to a radioactive material processing apparatus by a multi separator capable of separating radioactive substances contained in wastewater through a multi separator membrane process.

Korean Patent Registration No. 10-1999-0017129 discloses a method and apparatus for treating radioactive laundry waste liquid using a reverse osmosis membrane and UV / hydrogen peroxide photooxidation method.

The conventional method and apparatus for treating radioactive laundry wastewater using reverse osmosis membrane and UV / hydrogen peroxide photooxidation method are related to the treatment of laundry wastewater containing a small amount of radioactive substances generated at a nuclear power plant. After the pretreatment using a reverse osmosis process is a process to the final treatment process consists of a configuration to finish the treatment by passing through the ion exchange resin. However, the prior art has a problem in that the economic efficiency is inferior in that consumer materials such as hydrogen peroxide and ion exchange resin, which must be continuously consumed, are required.

In addition, in the case of laundry waste liquid containing radioactive material, the washing waste liquid must be treated after the radioactive material is removed from the laundry waste liquid due to the half-life of the radioactive material, and thus, a large storage tank for storing the laundry waste liquid is required. to be.

Accordingly, the present invention has been made to solve the above problems, by discharging the liquid (eg, water contained in the waste water) in which the radioactive material contained in the waste water is removed through a multiple separation membrane process to the storage tank It is an object of the present invention to provide a radioactive material processing apparatus using a multiple separator that can increase the service capacity of the storage tank and the service life of the storage tank by allowing solidified soil containing radioactive material to be accommodated.

Radioactive material processing apparatus according to an embodiment of the present invention is a storage tank for storing waste water containing radioactive material; Provided with waste water by being connected to a storage tank, separating the radioactive material contained in the waste water by the forward osmosis process using an induction solution, providing the radioactive material separated from the waste water to the storage tank, and providing the induced solution to the reverse osmosis process unit. Forward osmosis process unit; And receiving an induction solution connected to the forward osmosis process unit, generating a treated water by separating the radioactive material permeated into the induction solution during the forward osmosis process through a reverse osmosis process, and inducing solution containing the radioactive material after the reverse osmosis process. It is preferable to include a reverse osmosis process unit to provide a forward osmosis process unit.

In one embodiment of the present invention, the first membrane distillation, which is connected to the reverse osmosis process unit, separates the radioactive material remaining in the treated water provided by the reverse osmosis process unit through the first membrane distillation process to generate the final treated water. It is preferable to further include a process part.

In one embodiment of the present invention, between the reverse osmosis process unit and the first membrane distillation process unit, the temperature of the treated water provided from the reverse osmosis process unit to the first membrane distillation process unit is a temperature for performing the first membrane distillation process Further comprising a temperature control unit for controlling the temperature of the treated water to reach, the temperature control unit is connected to the first membrane distillation process unit in a circulating structure, receiving the treated water remaining radioactive material from the first membrane distillation process unit It is preferable.

In one embodiment of the present invention, between the forward osmosis process unit and the reverse osmosis process unit, the induction solution storage unit is connected in a circulating structure, the induction solution storage unit dilution produced by mixing the filtered water in the waste water during the forward osmosis process mixed with the induction solution It is preferable that the induction solution is provided through the reverse osmosis process unit and stored, and then provided to the forward osmosis process unit.

In one embodiment of the present invention, installed between the induction solution storage unit and the forward osmosis process unit, the radioactive material remaining in the dilute induction solution provided to the induction solution storage unit by induction through the second membrane distillation process by the vapor pressure difference induced It is preferable that the 2nd film distillation process part which produces a solution is further provided.

In one embodiment of the present invention, it is preferable that a crystallization unit is further provided between the second membrane distillation process unit and the storage tank to receive and dilute the dilution induction solution in which the radioactive material remains after completion of the second membrane distillation process.

In one embodiment of the present invention, between the induction solution storage unit and the storage tank, the dilution-inducing solution in which the radioactive material provided in the induction solution storage unit is separated into the radioactive material and the induction solution through an augmentation process, and the radioactive material is stored. It is preferable that the evaporation unit provided in the tank and provided to the reverse osmosis process unit is further installed.

On the other hand, in one embodiment of the present invention, is installed between the storage tank and the forward osmosis process unit, before the waste water in the storage tank flows into the forward osmosis process unit, by separating the solid material present in the waste water, the solid material storage tank It is preferable that the pretreatment unit is further provided to provide the wastewater from which the solid matter is separated to the forward osmosis process unit.

The present invention is to allow the waste water containing the radioactive material in the storage tank to be accommodated in the storage tank in a state in which the radioactive material is removed and solidified through the forward osmosis process, reverse osmosis process and membrane distillation process, to maximize the service life of the storage tank The radioactive material can be treated more effectively.

Figure 1 schematically shows the configuration of a radioactive material processing apparatus according to a multi separator according to a first embodiment of the present invention.

Figure 2 schematically shows the configuration of the radioactive material processing apparatus according to a multi separator according to a second embodiment of the present invention.

Figure 3 schematically shows the configuration of the radioactive material processing apparatus according to a multi separator according to a third embodiment of the present invention.

Figure 4 schematically shows the configuration of the radioactive material processing apparatus according to a multi separator according to a fourth embodiment of the present invention.

Figure 5 schematically shows the configuration of the radioactive material processing apparatus according to a multi separator according to a fifth embodiment of the present invention.

Figure 6 schematically shows the configuration of a radioactive material processing apparatus according to a multi separator according to a sixth embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, it will be described for the radioactive material processing apparatus according to a multi separator according to a preferred embodiment of the present invention.

First embodiment

Radioactive material processing apparatus 100a by a multi-separation membrane according to an embodiment of the present invention is a storage tank 101, forward osmosis process unit 120, reverse osmosis process unit 130, temperature control unit 140 and the first The film distillation process unit 150 is included. In this embodiment, the flow of the waste containing the radioactive material is indicated in the drawings by the dotted arrows, the flow of the treated water will be indicated by the solid arrow.

In this embodiment, the storage tank 101 is a storage member for storing the waste water containing the radioactive material. It is preferable that a shield plate (not shown) is installed inside the storage tank 101 to shield the radioactive material. The storage tank 101 is connected to the waste water inlet pipe 119 on one side, the first pipe 111 is connected to the forward osmosis process unit 120 on the other side.

In this embodiment, the forward osmosis process unit 120 is connected to the storage tank 101 is provided with waste water, the radioactive material contained in the waste water is separated by the forward osmosis process by the difference in concentration with the induction solution, radioactivity It is a device that provides the material and the solid material to the storage tank 101, and provides the water and the induction solution filtered by the forward osmosis process to the reverse osmosis process unit (130). Here, the forward osmosis process serves to lower the load of the first dehydration and treatment target material removal device and reverse osmosis process.

In general, the forward osmosis unit 120, unlike the reverse osmosis unit 130 to be described later, performs the separation of the material by the osmotic pressure using a material having a difference in concentration with the waste water, such as the induction solution. For this reason, external compressive force such as vapor pressure is not provided in the process of separating the radioactive material contained in the wastewater, so that the radioactive material may be separated from the wastewater through the forward osmosis process in a stabilized state.

Membranes of various materials can be used for the membrane for forward osmosis, cellulose acetate (CA), cellulose triacetate (CTA), polyol sulfide (PA), poly ether sulfone (PES), polyacrylonitrile (PAN), polyacrylic acid (PAA) It is possible to use various materials such as polycyclic aromatic hydrocarbon (PAH), PAI, etc., and it is possible to apply various types of membranes such as flat membrane, hollow fiber membrane and spiral wound type.

A variety of materials are used for the preparation of the induction solution for generating the driving force of the forward osmosis process, NaCl, KCl, MgCl ₂ , MgSO ₄ , Na ₂ SO ₄ , LaCl ₃ , D-glucose, NH ₄ HCO ₃ , 1,2,3-Trimethylimidazolium, a radioactive material processing apparatus (100a) -Na, magnetic nanoparticles by P multiple separation membrane, a variety of materials such as NH ₃ / CO ₂ can be used.

The forward osmosis process unit 120 is connected to the first pipe 111, the second pipe 112, the third pipe 113 and the fourth pipe 114. Here, the first pipe 111 is a pipe connecting the storage tank 101 and the forward osmosis process unit 120, and is a pipe providing waste water of the storage tank 101 to the forward osmosis process unit 120.

The second pipe 112 is a pipe connecting the forward osmosis process unit 120 and the reverse osmosis process unit 130 and provides a guide solution to which the radioactive material is transmitted to the reverse osmosis process unit 130 after performing the forward osmosis process. to be.

The third pipe 113 is a pipe connecting the reverse osmosis process unit 130 and the forward osmosis process unit 120, and unlike the second pipe 112, the induction solution after performing the reverse osmosis process is the forward osmosis process unit. 120 is provided piping.

The fourth pipe 114 is a pipe connecting the forward osmosis process unit 120 and the storage tank 101. Unlike the first pipe 111, the fourth pipe 114 filters the water and solids present in the waste water by performing the forward osmosis process. It is a pipe that provides a solid produced in the storage tank 101.

In this embodiment, the first pipe 111 and the fourth pipe 114 is a pipe through which waste, such as waste water or radioactive material, flows, and the second pipe 112 and the third pipe 113 flow induction solutions. It is plumbing. In this embodiment, the forward osmosis process unit 120 and the reverse osmosis process unit 130 is connected to the circulation structure by the second pipe 112 and the third pipe 113, the induction solution is the second pipe 112 And the third pipe 113 is performed while performing the forward osmosis process and reverse osmosis process.

Hereinafter, the reverse osmosis process unit 130 will be described.

The reverse osmosis process unit 130 is a member for treating the induction solution provided from the forward osmosis process unit 120 and separating the radioactive material permeated into the induction solution to obtain the treated water of the pure reverse osmosis process. That is, the reverse osmosis process unit 130 is a member for the recovery of the induction solution treated in the forward osmosis process and a stable secondary treatment to the radioactive material.

As the membrane used for the reverse osmosis process, a variety of materials may be used, and may be variously changed within a range apparent to those skilled in the art. Since the operating pressure of the reverse osmosis process is for the recovery and concentration of the diluted induction solution, it is preferable to operate at a pressure to ensure a stable water permeation higher than the osmotic pressure of the flow solution.

As described above, the reverse osmosis process unit 130 is connected to the forward osmosis process unit 120 by the second pipe 112 and the third pipe 113. At this time, the reverse osmosis process unit 130 and the forward osmosis process unit 120 has a structure connected in a circulation structure by the second pipe 112 and the third pipe 113 as shown in FIG.

As shown in FIG. 1, the reverse osmosis process unit 130 is connected to the forward osmosis process unit 120 by the second pipe 112 to receive an induction solution from the forward osmosis process unit 120. In addition, the reverse osmosis process unit 130 has a circulation path for providing the induction solution, which has been performed to perform the reverse osmosis process, to the forward osmosis process unit 120 by the third pipe 113.

The reverse osmosis process unit 130 is connected to the temperature control unit 140 by a fifth pipe (115). After completion of the reverse osmosis process, the treated water flows from the reverse osmosis process unit 130 to the temperature control unit 140 through the fifth pipe 115. Here, the temperature control unit 140 is a member for adjusting the temperature of the treated water provided to the membrane distillation process unit so that the temperature of the treated water provided by the reverse osmosis process unit 130 reaches a temperature at which the membrane distillation process can be performed.

The temperature controller 140 is connected to the first membrane distillation process unit 150 by a sixth pipe 116. The treated water heated in the temperature controller 140 flows to the first membrane distillation process unit 150 in the form of steam.

In one embodiment of the present invention, the first membrane distillation process unit 150 is connected to the reverse osmosis process unit 130 through the temperature control unit 140. The first membrane distillation process unit 150 is an apparatus for producing stable final treated water through the final treatment of the treated water generated in the reverse osmosis process. In the present embodiment, the final treated water refers to a fluid in which the radioactive material is removed to be discharged to the outside through the eighth pipe 118.

The first membrane distillation process is a process that shows excellent removal performance for ionic substances, and is a process of separating radioactive substances in the induction solution through the difference in vapor pressure generated by the temperature difference between the fluid flowing through the membrane.

In this case, as a characteristic of the process of passing only vaporized vapor through the membrane can be expected to completely remove the non-volatile materials such as ionic material, in this embodiment it can be finally treated the treated water generated in the reverse osmosis process.

The membrane distillation process can be operated by direct contact, vacuum, air gap, or sweep gas membrane distillation, and the operating temperature of the treated water for generating the driving force is the temperature of the cooling unit (not shown) for cooling. The beam can be operated at high temperatures.

The membrane used in the membrane distillation process can be a membrane having a module of flat membrane, hollow fiber, tubular, spiral winding type, and the material of the membrane is PTFE (Polytetrafluoroethylene), PVDF (Polyvinylidene fluoride), PP (Polypropylene) It is possible to use a membrane made of such materials, and in addition, if the membrane having a hydrophobicity by modifying the membrane made of a variety of materials can be variously changed within the range applicable from the position of those skilled in the art.

In the present embodiment, the first membrane distillation process unit 150 is connected to the temperature control unit 140 by the sixth pipe 116 and the seventh pipe 117 in a circulating structure, the treatment water remaining radioactive material The first membrane distillation process may be repeatedly performed until the final treatment water in which no radioactive substance remains.

After the first membrane distillation process, the first membrane distillation process unit 150 returns the treated water in which the radioactive material remains to the temperature control unit 140 through the seventh pipe 117 to remove the radioactive material. The treated water has a structure discharged to the outside through the eighth pipe 118.

Here, the seventh pipe 117 is a member connecting the temperature control unit 140 and the first film distillation process unit 150, the treated water after the first film distillation process in the first film distillation process unit 150 The pipe provided to the temperature control unit 140, the eighth pipe 118 is a pipe through which the final treatment water flows.

Referring to the wastewater treatment process of the radioactive material processing apparatus 100a according to the present invention is as follows.

Waste water in the storage tank 101 flows into the forward osmosis process unit 120 by the first pipe 111. The forward osmosis process unit 120 separates the solids and the liquid water containing the radioactive material present in the waste water by the forward osmosis process.

At this time, the solid material containing the radioactive material separated from the forward osmosis process unit 120 is recovered to the storage tank 101 through the fourth pipe 114, the induction solution used in the forward osmosis process is the second pipe 112 By the reverse osmosis process unit (130).

The reverse osmosis process unit 130 generates treated water by separating the radioactive material transmitted through the induction solution provided by the forward osmosis process unit 120 through a reverse osmosis process. After completion of the reverse osmosis process, the induction solution flows to the forward osmosis process unit 120 through the third pipe 113, and the treated water flows to the temperature control unit 140 through the fifth pipe 115.

The treated water introduced into the temperature control unit 140 from the reverse osmosis process unit 130 is heated to a temperature at which the first membrane distillation process can be performed by the temperature control unit 140. The treated water discharged from the temperature controller 140 flows to the first membrane distillation process unit 150 through the sixth pipe 116, and then the temperature difference between the membranes in the first membrane distillation process unit 150. The process of separating the radioactive material from the treated water by the vapor pressure by the proceeds to produce the final treated water.

At this time, the final treated water is discharged to the outside through the eighth pipe 118, the treated water remaining the radioactive material is provided to the temperature control unit 140 through the seventh pipe (117). At this time, the treated water flows from the temperature control unit 140 to the first membrane distillation process unit 150 through the sixth pipe 116 and the first membrane distillation process as described above is repeatedly carried out to finally obtain a radioactive material. The final treated water is removed to have a circulation path discharged to the outside through the eighth pipe 118.

Accordingly, the radioactive material processing apparatus 100a by the multiple separation membrane having the structure and operation flow as described above repeatedly performs the forward osmosis process, the reverse osmosis process and the membrane distillation process, thereby storing in the storage tank 101. By allowing the waste water to be solidified in a state where the radiation dose is reduced, it is possible to increase the waste water storage capacity of the storage tank 101 and to increase the treatment efficiency of the radioactive material.

Second embodiment

Hereinafter, a radioactive material processing apparatus according to a multi separator according to a second embodiment of the present invention will be described with reference to FIG. 2.

As shown in Figure 2, the radioactive material processing apparatus 100b by the multiple separation membrane according to an embodiment of the present invention is a storage tank 101, forward osmosis process unit 120, reverse osmosis process unit 130, temperature It includes a control unit 140, the first membrane distillation process unit 150 and the induction solution storage unit 160.

The radioactive material processing apparatus 100b according to the present invention is a storage tank 101, a forward osmosis process unit 120, a reverse osmosis process unit 130, and a temperature control unit 140 according to the first embodiment. ) And the first membrane distillation process unit 150 is substantially the same, the storage tank 101, the forward osmosis process unit 120, reverse osmosis process unit 130, the temperature control unit 140 and the first membrane The role of the distillation process unit 150 is also substantially the same as that of the first embodiment described above, and thus, detailed description thereof will be omitted in the present embodiment, and the first embodiment will be described with reference to the drawing numbers for the components to which they refer. Same as the example.

Hereinafter, a description of the induction solution storage unit 160 different from the configuration disclosed in the above-described first embodiment, for the forward osmosis process unit 120 and the reverse osmosis process unit 130 connected to the induction solution storage unit 160 The connection relationship will be described.

As shown in Figure 2, in the present embodiment, the induction solution storage unit 160, the induction solution storage member 160a, the first induction solution pipe 161, the second induction solution pipe 162 and the third Induction solution pipe 163 is included.

The induction solution storage member 160a is connected to the forward osmosis process part 120 and the reverse osmosis process part 130 by the first induction solution pipe 161 and the second induction solution pipe 162 in a circulating structure, and the third It has a structure connected to the storage tank 101 by the induction solution pipe 163.

In the present embodiment, the induction solution storage member 160a is a member in which the dilution induction solution provided by the reverse osmosis process unit 130 is stored. Here, the dilution fluid solution is a solution generated by mixing the filtered water from wastewater during the forward osmosis process into the induction solution, and also includes a radioactive substance permeated into the induction solution during the forward osmosis process.

The first induction solution pipe 161 is connected between the induction solution storage member 160a and the reverse osmosis process unit 130 to provide a dilution induction solution from the reverse osmosis process unit 130 to the induction solution storage member 160a. to be.

And, the second induction solution pipe 162 is connected between the induction solution storage member 160a and the forward osmosis process unit 120, the radioactive material does not remain in the dilution induction solution accommodated in the induction solution storage member 160a. In this case, the dilution-inducing solution is provided to the forward osmosis process unit 120.

Finally, the third induction solution pipe 163 is connected between the induction solution storage member 160a and the storage tank 101 to provide a dilution induction solution in which the radioactive material remains to the storage tank 101.

Referring to the wastewater treatment process of the radioactive material processing apparatus 100b by the multi separator according to the present embodiment is as follows.

Waste water in the storage tank 101 flows into the forward osmosis process unit 120 by the first pipe 111. The forward osmosis process unit 120 separates the solids and the liquid water containing the radioactive material present in the waste water by the forward osmosis process. At this time, the solid material containing the radioactive material separated from the forward osmosis process unit 120 is recovered to the storage tank 101 through the fourth pipe 114, the induction solution used in the forward osmosis process is the second pipe 112 By the reverse osmosis process unit (130).

The reverse osmosis process unit 130 generates treated water by separating the radioactive material transmitted through the induction solution provided by the forward osmosis process unit 120 through a reverse osmosis process. After completion of the reverse osmosis process, the induction solution flows to the forward osmosis process unit 120 through the third pipe 113, and the treated water flows to the temperature control unit 140 through the fifth pipe 115. Here, since the treatment of the radioactive material remaining in the treated water introduced into the temperature control unit 140 through the fifth pipe 115 is the same as the first embodiment described above, the description thereof will be omitted. do.

On the other hand, the dilution-inducing solution introduced into the induction solution storage member 160a through the first induction solution pipe 161, if the radioactive material and the waste water remain in accordance with the remaining of the radioactive material, the third induction solution pipe (163). It is provided to the storage tank 101 through), and if the induction solution state is provided to the forward osmosis process unit 120 through the second induction solution pipe 162.

The radioactive material processing apparatus 100b according to the multi separator according to the present embodiment may reduce the radioactive dose of the radioactive material present in the wastewater while repeatedly performing the circulation flow as described above.

In addition, the radioactive material processing apparatus 100b according to the multi separator according to the present embodiment, unlike the first embodiment described above, does not directly provide the induction solution in which the reverse osmosis process is performed to the forward osmosis process unit 120. By removing the radioactive material that may have been contained in the induction solution once again through the induction solution storage unit 160, the use efficiency of the induction solution reused in the forward osmosis process may be increased.

Third embodiment

Hereinafter, a radioactive material processing apparatus according to a multi separator according to a third embodiment of the present invention will be described with reference to FIG. 3.

As shown in Figure 3, the radioactive material processing apparatus 100c by the multiple separation membrane according to an embodiment of the present invention is a storage tank 101, forward osmosis process unit 120, reverse osmosis process unit 130, temperature Control unit 140, the first membrane distillation process unit 150, the induction solution storage unit 160 and the second membrane distillation process unit 170.

The radioactive material processing apparatus 100c according to the multi separator according to the present embodiment includes the first embodiment and the storage tank 101, the forward osmosis process unit 120, the reverse osmosis process unit 130, and the temperature control unit 140. ) And the first membrane distillation process unit 150 is substantially the same, the storage tank 101, the forward osmosis process unit 120, reverse osmosis process unit 130, the temperature control unit 140 and the first membrane The role of the distillation process unit 150 is also substantially the same as that of the first embodiment described above, and thus, detailed description thereof will be omitted in the present embodiment, and the first embodiment will be described with reference to the drawing numbers for the components to which they refer. Same as the example.

Hereinafter, a description of the induction solution storage unit 160 and the second membrane distillation process unit 170 different from those described in the above-described first embodiment, the induction solution storage unit 160 and the second membrane distillation process unit ( The connection relationship between the forward osmosis process unit 120 and the reverse osmosis process unit 130 connected to 170 will be described.

As shown in FIG. 3, in the present embodiment, the induction solution storage unit 160, the induction solution storage member 160a, the first induction solution pipe 161, the second induction solution pipe 162 and the third Induction solution pipe 163 is included.

In the present embodiment, the induction solution storage member 160a is connected to the forward osmosis process unit 120, the reverse osmosis process unit 130, and the second membrane distillation process unit 170. Specifically, the induction solution storage member 160a is connected to the forward osmosis process unit 120 and the reverse osmosis process unit 130 by the first induction solution pipe 161 and the second induction solution pipe 162 in a circulation structure. , The structure is connected to the storage tank 101 by the third induction solution pipe 163. Then, the second membrane distillation pipe 172a and the second membrane distillation pipe 172b to be described later are connected to the second membrane distillation process member 171.

On the other hand, the second membrane distillation process unit 170 is a device for treating the radioactive material remaining in the dilute induction solution provided to the induction solution storage unit 160 through the second membrane distillation process. The second membrane distillation process unit 170 includes a second membrane distillation process member 171, a second membrane distillation pipe 172a, a second membrane distillation pipe 172b, and a second membrane distillation pipe 172c. The second membrane distillation process unit 170 is installed between the induction solution storage unit 160 and the forward osmosis process unit 120.

In the present embodiment, the second membrane distillation process member 171 is a device for separating the radioactive material remaining in the dilution induction solution by performing the second membrane distillation process. A second membrane distillation pipe 172a, a second membrane distillation pipe 172b, and a second membrane distillation pipe 172c are connected to the second membrane distillation process member 171.

The second 2a membrane distillation pipe 172a is connected to the induction solution storage member 160a and the second membrane distillation process member 171 to allow the dilution induction solution to flow.

The second 2b membrane distillation pipe 172b is connected to the induction solution storage member 160a and the second membrane distillation process member 171, and the dilution induction solution in which the radioactive material remains after the completion of the second membrane distillation process is induced. The pipe is provided to the storage member (160a).

The second 2c membrane distillation pipe 172c is connected to the second membrane distillation process member 171 and the forward osmosis process unit 120, and after the completion of the second membrane distillation process, the induced solution is transferred to the forward osmosis process unit 120. To provide piping.

Referring to the wastewater treatment process of the radioactive material processing apparatus 100c by the multi separator according to the present embodiment are as follows.

In this embodiment, the dilution-inducing solution provided to the induction solution storage member 160a is introduced into the second membrane distillation process member 171 through the second membrane distillation pipe 172a. The second membrane distillation process unit 170 performs a second membrane distillation process for separating the radioactive material from the dilution-inducing solution. At this time, the second membrane distillation step is a step of separating the radioactive substance remaining in the dilution-inducing solution by the vapor pressure due to the temperature difference of the fluid interposed between the membranes as in the first membrane distillation step described in the first embodiment described above.

The second membrane distillation process unit 170 is provided to the forward osmosis process unit 120 through the second membrane distillation pipe 172c when the dilution-inducing solution is removed from the radioactive material through the second membrane distillation process to form the induced solution. When the radioactive substance remains, the dilution-inducing solution is provided back to the induction solution storage unit 160 through the second distillation pipe 172b and then the second membrane distillation process through the second distillation pipe 172a. It has a flow that flows to the member 171.

Accordingly, unlike the first embodiment described above, the radioactive material processing apparatus 100c according to the multiple separation membrane according to the present embodiment has a second membrane distillation of the radioactive material contained in the wastewater diluted in the induction solution during the forward osmosis process. By removing through the process unit 170 to provide the induction solution to the forward osmosis process unit 120, it is possible to increase the use efficiency of the induction solution reused in the forward osmosis process, and increase the treatment efficiency of the radioactive material Can be.

Fourth embodiment

Hereinafter, a radioactive material processing apparatus according to a multi separator according to a fourth embodiment of the present invention will be described with reference to FIG. 4.

As shown in Figure 4, the radioactive material processing apparatus 100d by the multi separator according to an embodiment of the present invention is a storage tank 101, forward osmosis process unit 120, reverse osmosis process unit 130, temperature Control unit 140, the first membrane distillation process unit 150, induction solution storage unit 160, the second membrane distillation process unit 170 and the crystallization unit 180.

The radioactive material processing apparatus 100d according to the multi separator according to the present embodiment includes a storage tank 101, an forward osmosis process unit 120, a reverse osmosis process unit 130, and a temperature which are the components disclosed in the third embodiment. The control unit 140, the first membrane distillation process unit 150, the induction solution storage unit 160 and the second membrane distillation process unit 170 is substantially the same configuration, the role of these also described above third Since the embodiments are substantially the same as those of the embodiments, detailed descriptions thereof will be omitted, and the same reference numerals for the components they refer to will be described in the same manner as in the above-described third embodiment.

Hereinafter, the crystallization unit 180 different from the structure disclosed in the first embodiment will be described.

In this embodiment, the crystallization unit 180 includes a crystallization member 180a, a first crystallization pipe 181, and a second crystallization pipe 182. The crystallization unit 180 is connected between the second film distillation process unit 170 and the storage tank 101. The crystallization unit 180 is a device for crystallizing the dilution induction solution provided by the second membrane distillation process unit 170 in a solid state.

In this embodiment, the crystallization member 180a is connected to the second membrane distillation process member 171 by a second membrane distillation pipe 172b. The crystallization member 180a is a member in which the radioactive material introduced through the second distillation pipe 172b is stored and a crystallization process for crystallizing the stored radioactive material is performed. The first crystallization pipe 181 and the second crystallization pipe 182 are connected to the crystallization member 180a.

Here, the first crystallization pipe 181 is a pipe connected to the crystallization member 180a and the second film distillation pipe 172a to provide the radioactive material that is not crystallized in the crystallization process to the second film distillation pipe 172a. .

The second crystallization pipe 182 is connected to the crystallization member 180a and the storage tank 101 to provide the storage tank 101 with the radioactive material crystallized in the crystallization process.

Referring to the wastewater treatment process of the radioactive material processing apparatus 100d by the multi separator according to the present embodiment are as follows.

The second membrane distillation process unit 170 is provided to the forward osmosis process unit 120 through the second membrane distillation pipe 172c when the dilution-inducing solution is removed from the radioactive material through the second membrane distillation process to form the induced solution. When the radioactive substance remains, the dilution-inducing solution is provided to the crystallization member 180a through the second membrane distillation pipe 172b.

In the crystallization member 180a, a crystallization process of crystallizing the dilution-inducing solution containing the radioactive material provided through the second membrane distillation pipe 172b is performed. In the crystallization process, the dilution-inducing solution that is not crystallized is flowed back to the second membrane distillation process member 171 via the second crystallization pipe 181 through the second membrane distillation pipe 172a.

On the other hand, the material that is in a crystallized state in the crystallization member 180a flows to the storage tank 101 through the second crystallization pipe 182. The material provided to the storage tank 101 is repeatedly supplied to the forward osmosis process unit 120 through the first pipe 111 together with the waste water contained in the storage tank 101.

A second membrane distillation process is performed in the second membrane distillation process unit 170, and the induced solution from which the radioactive material is removed is provided to the forward osmosis process unit 120 through the second c membrane distillation pipe 172c, and the radioactive material. The dilution-inducing solution that is not completely removed is provided to the induction solution storage unit 160 through the second membrane distillation pipe 172b.

Fifth Embodiment

Hereinafter, a radioactive material processing apparatus according to a multi separator according to a fifth embodiment of the present invention will be described with reference to FIG. 5.

As shown in Figure 5, the radioactive material processing apparatus 100e by the multiple separation membrane according to an embodiment of the present invention storage tank 101, reverse osmosis process unit 130, reverse osmosis process unit 130, temperature control The unit 140, the first membrane distillation process unit 150, the induction solution storage unit 160 and the evaporator 190.

The radioactive material processing apparatus 100e according to the multi separator according to the present embodiment includes the first embodiment and the storage tank 101, the reverse osmosis process unit 130, the reverse osmosis process unit 130, and the temperature control unit 140. And the first membrane distillation process unit 150 is substantially the same, the storage tank 101, reverse osmosis process unit 130, reverse osmosis process unit 130, temperature control unit 140 and the first membrane distillation hole The role of the government 150 is also substantially the same as that of the first embodiment described above, and thus, detailed description thereof will be omitted in the present embodiment, and reference numerals for the components referred to will be described with the first embodiment. The same description will be given.

Hereinafter, a description of the induction solution storage unit 160 and the evaporator 190 different from the configuration disclosed in the above-described first embodiment, the reverse osmosis process unit connected to the induction solution storage unit 160 and the evaporator 190 ( 130) and the reverse osmosis process unit 130 will be described.

As shown in FIG. 5, in the present embodiment, the induction solution storage unit 160 includes an induction solution storage member 160a, a first induction solution pipe 161, a second induction solution pipe 162, and a third. Induction solution pipe 163 is included.

In the present embodiment, the induction solution storage member 160a is connected to the reverse osmosis process unit 130, the reverse osmosis process unit 130, and the evaporator 190. The induction solution storage member 160a is a member for storing the dilution induction solution provided by the reverse osmosis process unit 130.

The induction solution storage member 160a is connected to the reverse osmosis process unit 130 and the reverse osmosis process unit 130 by the first induction solution pipe 161 and the second induction solution pipe 162, respectively, and the third induction solution pipe. 163 is connected to the evaporator 190.

The first induction solution pipe 161 is connected between the induction solution storage member 160a and the reverse osmosis process unit 130 to provide a dilution induction solution from the reverse osmosis process unit 130 to the induction solution storage member 160a. to be. In addition, the second induction solution pipe 162 is connected between the induction solution storage member 160a and the reverse osmosis process unit 130 to provide the induction solution to the reverse osmosis process unit 130. The third induction solution pipe 163 is a pipe connecting the induction solution storage member 160a and the evaporation member 191. In the present embodiment, the dilution-inducing solution in which the radioactive material remains is provided to the evaporator 190 through the third induction solution pipe 163.

The induction solution storage unit 160 according to the present embodiment receives the dilution induction solution containing the radioactive material after the reverse osmosis process from the reverse osmosis process unit 130 by the connection structure as described above. In addition, the induction solution from which the radioactive material in the dilute induction solution is removed has a circulation structure for providing the reverse osmosis process unit 130 and the evaporation unit 190.

In the present embodiment, the evaporator 190 concentrates the radioactive material remaining in the dilution induction solution provided to the induction solution storage unit 160 in the reverse osmosis process unit 130, and then the concentrated radioactive material is stored in the storage tank 101. It is provided, and the device is provided to the reverse osmosis process unit 130 in the form of an induction solution by cooling the vaporized vapor while being separated from the radioactive material in the concentration process.

The evaporator 190 includes an evaporation member 191, a first evaporation pipe 192 and a second evaporation pipe 193. The evaporation unit 190 is installed between the induction solution storage unit 160 and the reverse osmosis process unit 130.

In the present embodiment, the evaporation member 191 is an apparatus in which the evaporation process is performed to separate the radioactive material from the dilution induction solution. The evaporation member 191 is connected to the third induction solution pipe 163, the first evaporation pipe 192 and the second evaporation pipe 193. In this embodiment, the third induction solution pipe 163 is connected to the induction solution storage member 160a and the evaporation member 191, the dilution induction solution flows through the pipe.

The first evaporation pipe 192 is connected to the evaporation member 191 and the reverse osmosis process unit 130, and after completion of the evaporation process, the induction solution is provided to the reverse osmosis process unit 130. In addition, the second evaporation pipe 193 is connected to the evaporation member 191 and the storage tank 101, and provides a storage tank 101 with radioactive material separated from the dilution induction solution after completion of the evaporation process. .

Unlike the first embodiment described above, the radioactive material processing apparatus 100e according to the multi separator according to the present embodiment stores the induction solution without directly providing the induction solution in which the reverse osmosis process is completed, to the reverse osmosis process unit 130. By removing the radioactive material that may have been included in the induction solution once again through the unit 160, the use efficiency of the induction solution reused in the reverse osmosis process may be increased.

Referring to the wastewater treatment process of the radioactive material processing apparatus 100e by the multi separator according to the present embodiment are as follows.

On the other hand, the dilution-inducing solution introduced into the induction solution storage member 160a through the first induction solution pipe 161, if the radioactive material and the waste water remain in accordance with the remaining of the radioactive material, the third induction solution pipe 163 And provided to the evaporation member 191 and provided to the forward osmosis process unit 120 through the second induction solution pipe 162 when the radioactive material does not remain.

On the other hand, the evaporation member 191 is carried out an evaporation process. By the evaporation process in the evaporation member 191, the induction solution from which the radioactive material is removed is provided to the reverse osmosis process unit 130 through the first evaporation pipe 192, the dilution induction solution is not completely removed the radioactive material It is provided to the storage tank 101 through the second evaporation pipe (193).

Unlike the first embodiment described above, the radioactive material processing apparatus 100e according to the multi separator according to the present embodiment stores the induction solution without directly providing the induction solution in which the reverse osmosis process is completed, to the reverse osmosis process unit 130. By removing the radioactive material that may have been included in the induction solution once again through the unit 160, and providing a dilution induction solution containing the radioactive material not removed in the induction solution storage unit 160 to the evaporator 190 In addition, the purification efficiency of the dilute induction solution can increase the use efficiency of the induction solution reused in the reverse osmosis process.

Sixth embodiment

Hereinafter, a radioactive material processing apparatus according to a multi separator according to a sixth embodiment of the present invention will be described with reference to FIG. 6.

As shown in Figure 6, the radioactive material processing apparatus 100f by the multiple separation membrane according to an embodiment of the present invention is a storage tank 101, the forward osmosis process unit 120, reverse osmosis process unit 130, temperature It includes a control unit 140, the first film distillation process unit 150 and the pretreatment unit (110a).

The radioactive material processing apparatus 100f according to the multi separator according to the present embodiment includes the first embodiment and the storage tank 101, the forward osmosis process unit 120, the reverse osmosis process unit 130, and the temperature control unit 140. ) And the first membrane distillation process unit 150 is substantially the same, the storage tank 101, the forward osmosis process unit 120, reverse osmosis process unit 130, the temperature control unit 140 and the first membrane The role of the distillation process unit 150 is also substantially the same as that of the first embodiment described above, and thus, detailed description thereof will be omitted in the present embodiment, and the first embodiment will be described with reference to the drawing numbers for the components to which they refer. Same as the example.

Hereinafter, a description of the pretreatment unit 110a different from the configuration disclosed in the above-described first embodiment and a connection relationship between the storage tank 101 and the forward osmosis process unit 120 connected to the pretreatment unit 110a will be described. Shall be.

As shown in FIG. 6, the pretreatment unit 110a is located between the storage tank 101 and the forward osmosis process unit 120. In the present embodiment, the pretreatment unit 110a is connected to the first pipe 111 and the fourth pipe 114. The pretreatment unit 110a is a device used for pretreatment of the forward osmosis process to remove solids such as suspended solids contained in the waste water in the process of providing waste water to the forward osmosis process unit 120 in the storage tank 101. .

In the present exemplary embodiment, the pretreatment unit 110a includes a first pipe 111 connecting the storage tank 101 and the pretreatment unit 110a, and a first a connecting the pretreatment unit 110a and the forward osmosis unit 120a. The 4th piping 114a which connects the piping 111a, the preprocessing part 110a, and the 4th piping 114 is connected.

The pretreatment process according to this embodiment is performed as follows. First, the waste water discharged through the first pipe 111 from the storage tank 101 flows into the pretreatment unit 110a. Solids contained in the wastewater are separated from the pretreatment unit 110a, and the wastewater of the liquid type is flowed to the forward osmosis unit 120 through the first pipe 1a. Then, the solid separated in the pretreatment unit 110a flows into the fourth pipe 114 through the fourth pipe 114a and returns to the storage tank 101.

On the other hand, the waste water in the liquid state introduced into the forward osmosis process unit 120, as described in the first embodiment described above, the forward osmosis process unit 120, reverse osmosis process unit 130, the temperature control unit 140 and The first membrane distillation process unit 150 has a circulation path for separating the radioactive material contained in the waste water while sequentially flowing.

Radioactive material processing apparatus (100f) by a multi-membrane membrane having the structure and operation flow as described above, by repeatedly performing the pretreatment process, forward osmosis process, reverse osmosis process and membrane distillation process, the storage tank 101 By allowing the waste water to be solidified in a state where the radiation dose is reduced, it is possible to increase the waste water storage capacity of the storage tank 101 and to increase the treatment efficiency of the radioactive material.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

Claims

A storage tank in which waste water containing radioactive material is stored;

The waste water is connected to the storage tank, and the radioactive material contained in the waste water is separated by an electroosmotic process using an induction solution, and the radioactive material separated from the waste water is provided to the storage tank. Forward osmosis process unit to provide a solution to the reverse osmosis process unit; And

The induction solution is connected to the forward osmosis process unit, and the radioactive material permeated into the induction solution during the forward osmosis process is separated through a reverse osmosis process to generate treated water. Apparatus for treating radioactive material by a multi-membrane, characterized in that it comprises the reverse osmosis process unit to provide an induction solution included in the forward osmosis process unit.
The method of claim 1,

And a first membrane distillation process unit connected to the reverse osmosis process unit to separate the radioactive material remaining in the treated water provided by the reverse osmosis process unit through a first membrane distillation process to generate a final treated water. Radioactive material processing apparatus according to the multiple separation membrane.
The method of claim 2,

Between the reverse osmosis process unit and the first membrane distillation process unit, the temperature of the treated water provided from the reverse osmosis process unit to the first membrane distillation process unit reaches a temperature for performing the first membrane distillation process. Further comprising a temperature control unit for adjusting the temperature of the treated water,

The temperature control unit is connected to the first membrane distillation process unit in a circulating structure, the radioactive material processing apparatus according to the multiple separation membrane, characterized in that receiving the treated water remaining radioactive material from the first membrane distillation process unit.
The method of claim 1,

Induction solution storage is connected between the forward osmosis process unit and the reverse osmosis process unit in a circulation structure,

The induction solution storage unit is provided with the dilution induction solution generated by mixing the filtered water in the waste water in the forward osmosis process via the reverse osmosis process unit during the forward osmosis process, characterized in that to provide to the forward osmosis process unit. Radioactive material processing apparatus by a multi separator.
The method of claim 4, wherein

The induction solution is installed between the induction solution storage unit and the forward osmosis process unit, and the radioactive material remaining in the dilution induction solution provided to the induction solution storage unit is treated through a second membrane distillation process due to the difference in vapor pressure to obtain the induction solution. Radioactive material processing apparatus according to a multiple separation membrane, characterized in that the second membrane distillation process unit further generated.
The method of claim 5, wherein

Between the second membrane distillation process unit and the storage tank, after completion of the second membrane distillation process, a crystallization unit is further provided for crystallization by receiving a dilution-inducing solution in which radioactive material remains. Material handling device.
The method of claim 4, wherein

Between the induction solution storage unit and the storage tank, the dilution induction solution in which the radioactive material provided in the induction solution storage unit is separated into the radioactive material and the induction solution through an augmentation process, and the radioactive material is stored in the storage tank. Provided as, wherein the induction solution is a radioactive material processing apparatus according to the multiple separator, characterized in that the evaporation unit further provided to the reverse osmosis process unit.
The method of claim 1,

Installed between the storage tank and the forward osmosis process unit, before the waste water in the storage tank flows into the forward osmosis process unit, to separate the solid material present in the waste water, to provide the solid material to the storage tank And, a pretreatment unit for providing the wastewater from which the solid matter is separated to the forward osmosis process unit.